diff --git a/CHANGELOG.md b/CHANGELOG.md
index 650ca5dfc6..6c554bb78f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,10 +16,13 @@ Place announcement text here.
 ### Changed
 - Improved error message for the case when `autoload.php` is not found. - @RomanSyroeshko #371
 - Renamed the `align` option of `NumberingLevel`, `Frame`, `Table`, and `Paragraph` styles into `alignment`. - @RomanSyroeshko
+- Bootstrap script for the manual installation scenario (now include `bootstrap.php` instead of `src/PhpWord/Autoloader.php`). - @RomanSyroeshko
 
 ### Deprecated
 - `getAlign` and `setAlign` methods of `NumberingLevel`, `Frame`, `Table`, and `Paragraph` styles.
 Use the correspondent `getAlignment` and `setAlignment` methods instead.
+- `left`, `right`, and `justify` alignment options for paragraphs (now are mapped to `Jc::START`, `Jc::END`, and `Jc::BOTH`).
+- `left`, `right`, and `justify` alignment options for tables (now are mapped to `Jc::START`, `Jc::END`, and `Jc::CENTER`).
 
 ### Removed
 - `PhpOffice\PhpWord\Style\Alignment`. Style properties, which previously stored instances of this class, now deal with strings.
diff --git a/bootstrap.php b/bootstrap.php
new file mode 100644
index 0000000000..8f427a946d
--- /dev/null
+++ b/bootstrap.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * This file is part of PHPWord - A pure PHP library for reading and writing
+ * word processing documents.
+ *
+ * PHPWord is free software distributed under the terms of the GNU Lesser
+ * General Public License version 3 as published by the Free Software Foundation.
+ *
+ * For the full copyright and license information, please read the LICENSE
+ * file that was distributed with this source code. For the full list of
+ * contributors, visit https://github.com/PHPOffice/PHPWord/contributors. test bootstrap
+ *
+ * @link        https://github.com/PHPOffice/PHPWord
+ * @copyright   2010-2014 PHPWord contributors
+ * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
+ */
+
+$vendorDirPath = realpath(__DIR__ . '/vendor');
+if (file_exists($vendorDirPath . '/autoload.php')) {
+    require $vendorDirPath . '/autoload.php';
+} else {
+    throw new Exception(
+        sprintf(
+            'Could not find file \'%s\'. It is generated by Composer. Use \'install --prefer-source\' or \'update --prefer-source\' Composer commands to move forward.',
+            $vendorDirPath . '/autoload.php'
+        )
+    );
+}
diff --git a/composer.json b/composer.json
index b55d8340ca..b579598668 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,8 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "ext-xml": "*"
+        "ext-xml": "*",
+        "zendframework/zend-validator": "2.5.*"
     },
     "require-dev": {
         "phpunit/phpunit": "3.7.*",
@@ -44,14 +45,15 @@
         "phploc/phploc": "2.*",
         "dompdf/dompdf":"0.6.*",
         "tecnick.com/tcpdf": "6.*",
-        "mpdf/mpdf": "5.*"
+        "mpdf/mpdf": "5.*",
+        "zendframework/zend-validator": "2.5.*"
     },
     "suggest": {
-        "ext-zip": "Used to write DOCX and ODT",
-        "ext-gd2": "Used to add images",
-        "ext-xmlwriter": "Used to write DOCX and ODT",
-        "ext-xsl": "Used to apply XSL style sheet to main document part of OOXML template",
-        "dompdf/dompdf": "Used to write PDF"
+        "ext-zip": "Allows writing DOCX and ODT",
+        "ext-gd2": "Allows adding images",
+        "ext-xmlwriter": "Allows writing DOCX and ODT",
+        "ext-xsl": "Allows applying XSL style sheet to main document part of OOXML template",
+        "dompdf/dompdf": "Allows writing PDF"
     },
     "autoload": {
         "psr-4": {
diff --git a/docs/installing.rst b/docs/installing.rst
index d05464bf07..2ba8509a15 100644
--- a/docs/installing.rst
+++ b/docs/installing.rst
@@ -22,14 +22,12 @@ Installation
 ------------
 
 There are two ways to install PHPWord, i.e. via
-`Composer <http://getcomposer.org/>`__ or manually by downloading the
-library.
+`Composer <http://getcomposer.org/>`__ or manually by downloading the library.
 
 Using Composer
 ~~~~~~~~~~~~~~
 
-To install via Composer, add the following lines to your
-``composer.json``:
+To install via Composer, add the following lines to your ``composer.json``:
 
 .. code-block:: json
 
@@ -51,8 +49,8 @@ Notice: all contributions must be done against the developer branch.
     }
 
 
-Manual install
-~~~~~~~~~~~~~~
+Manual installation
+~~~~~~~~~~~~~~~~~~~
 
 To install manually, you change to the web-server directory of your file system. Then you have 2 possibilities.
 
@@ -63,12 +61,11 @@ To install manually, you change to the web-server directory of your file system.
 
     git clone https://github.com/PHPOffice/PHPWord.git  
 
-To use the library, include ``src/PhpWord/Autoloader.php`` in your PHP script and
-invoke ``Autoloader::register``.
+To use the library, include ``bootstrap.php`` in your PHP script and invoke ``Autoloader::register``.
 
 .. code-block:: php
 
-    require_once '/path/to/src/PhpWord/Autoloader.php';
+    require_once "${path_to_the_cloned_repo}/bootstrap.php";
     \PhpOffice\PhpWord\Autoloader::register();
 
 
diff --git a/samples/Sample_Footer.php b/samples/Sample_Footer.php
index 95ac693fc3..2d89bfd253 100644
--- a/samples/Sample_Footer.php
+++ b/samples/Sample_Footer.php
@@ -1,7 +1,4 @@
 <?php
-/**
- * Footer file
- */
 if (CLI) {
     return;
 }
diff --git a/samples/Sample_Header.php b/samples/Sample_Header.php
index 22d27a4a6b..29e5cf1f04 100644
--- a/samples/Sample_Header.php
+++ b/samples/Sample_Header.php
@@ -1,14 +1,10 @@
 <?php
-require_once __DIR__ . '/../src/PhpWord/Autoloader.php';
+require_once __DIR__ . '/../bootstrap.php';
 
-date_default_timezone_set('UTC');
-
-/**
- * Header file
- */
 use PhpOffice\PhpWord\Autoloader;
 use PhpOffice\PhpWord\Settings;
 
+date_default_timezone_set('UTC');
 error_reporting(E_ALL);
 define('CLI', (PHP_SAPI == 'cli') ? true : false);
 define('EOL', CLI ? PHP_EOL : '<br />');
diff --git a/src/PhpWord/Autoloader.php b/src/PhpWord/Autoloader.php
index 68da845de3..1865292b76 100644
--- a/src/PhpWord/Autoloader.php
+++ b/src/PhpWord/Autoloader.php
@@ -17,9 +17,6 @@
 
 namespace PhpOffice\PhpWord;
 
-/**
- * Autoloader
- */
 class Autoloader
 {
     /** @const string */
diff --git a/src/PhpWord/SimpleType/Jc.php b/src/PhpWord/SimpleType/Jc.php
index 3d7366e403..ff94db169d 100644
--- a/src/PhpWord/SimpleType/Jc.php
+++ b/src/PhpWord/SimpleType/Jc.php
@@ -17,6 +17,8 @@
 
 namespace PhpOffice\PhpWord\SimpleType;
 
+use Zend\Validator\InArray;
+
 /**
  * Horizontal Alignment Type.
  *
@@ -35,23 +37,45 @@ final class Jc
     const LOW_KASHIDA = 'lowKashida';
     const THAI_DISTRIBUTE = 'thaiDistribute';
 
+    /**
+     * @deprecated 0.13.0 Use `START` instead.
+     */
+    const LEFT = 'left';
+    /**
+     * @deprecated 0.13.0 Use `END` instead.
+     */
+    const RIGHT = 'right';
+    /**
+     * @deprecated 0.13.0 Use `BOTH` instead.
+     */
+    const JUSTIFY = 'justify';
+
     /**
      * @since 0.13.0
      *
-     * @return string[]
+     * @return \Zend\Validator\InArray
      */
-    final public static function getAllowedValues()
-    {
-        return array(
-            self::START,
-            self::CENTER,
-            self::END,
-            self::MEDIUM_KASHIDA,
-            self::DISTRIBUTE,
-            self::NUM_TAB,
-            self::HIGH_KASHIDA,
-            self::LOW_KASHIDA,
-            self::THAI_DISTRIBUTE,
+    final public static function getValidator() {
+        // todo: consider caching validator instances.
+        return new InArray(
+            array (
+                'haystack' => array(
+                    self::START,
+                    self::CENTER,
+                    self::END,
+                    self::BOTH,
+                    self::MEDIUM_KASHIDA,
+                    self::DISTRIBUTE,
+                    self::NUM_TAB,
+                    self::HIGH_KASHIDA,
+                    self::LOW_KASHIDA,
+                    self::THAI_DISTRIBUTE,
+                    self::LEFT,
+                    self::RIGHT,
+                    self::JUSTIFY,
+                ),
+                'strict'   => InArray::COMPARE_STRICT,
+            )
         );
     }
 }
diff --git a/src/PhpWord/SimpleType/JcTable.php b/src/PhpWord/SimpleType/JcTable.php
index e9928a01fd..8a918fe7bb 100644
--- a/src/PhpWord/SimpleType/JcTable.php
+++ b/src/PhpWord/SimpleType/JcTable.php
@@ -17,6 +17,8 @@
 
 namespace PhpOffice\PhpWord\SimpleType;
 
+use Zend\Validator\InArray;
+
 /**
  * Table Alignment Type.
  *
@@ -28,13 +30,31 @@ final class JcTable
     const CENTER = 'center';
     const END = 'end';
 
+    /**
+     * @deprecated 0.13.0 Use `START` instead.
+     */
+    const LEFT = 'left';
+    /**
+     * @deprecated 0.13.0 Use `END` instead.
+     */
+    const RIGHT = 'right';
+    /**
+     * @deprecated 0.13.0 Use `CENTER` instead.
+     */
+    const JUSTIFY = 'justify';
+
     /**
      * @since 0.13.0
      *
-     * @return string[]
+     * @return \Zend\Validator\InArray
      */
-    final public static function getAllowedValues()
-    {
-        return array(self::START, self::CENTER, self::END);
+    final public static function getValidator() {
+        // todo: consider caching validator instances.
+        return new InArray(
+            array (
+                'haystack' => array(self::START, self::CENTER, self::END, self::LEFT, self::RIGHT, self::JUSTIFY),
+                'strict'   => InArray::COMPARE_STRICT,
+            )
+        );
     }
 }
diff --git a/src/PhpWord/Style/Frame.php b/src/PhpWord/Style/Frame.php
index 055a4e8944..13388f6bc6 100644
--- a/src/PhpWord/Style/Frame.php
+++ b/src/PhpWord/Style/Frame.php
@@ -200,8 +200,25 @@ public function getAlignment()
      */
     public function setAlignment($value)
     {
-        if (in_array($value, Jc::getAllowedValues(), true)) {
-            $this->alignment = $value;
+        if (Jc::getValidator()->isValid($value)) {
+            $alignment = '';
+
+            switch ($value) {
+                case Jc::LEFT:
+                    $alignment = Jc::START;
+                    break;
+                case Jc::RIGHT:
+                    $alignment = Jc::END;
+                    break;
+                case Jc::JUSTIFY:
+                    $alignment = Jc::BOTH;
+                    break;
+                default:
+                    $alignment = $value;
+                    break;
+            }
+
+            $this->alignment = $alignment;
         }
 
         return $this;
diff --git a/src/PhpWord/Style/NumberingLevel.php b/src/PhpWord/Style/NumberingLevel.php
index 91f40df247..46686bf6fe 100644
--- a/src/PhpWord/Style/NumberingLevel.php
+++ b/src/PhpWord/Style/NumberingLevel.php
@@ -298,8 +298,25 @@ public function getAlignment()
      */
     public function setAlignment($value)
     {
-        if (in_array($value, Jc::getAllowedValues(), true)) {
-            $this->alignment = $value;
+        if (Jc::getValidator()->isValid($value)) {
+            $alignment = '';
+
+            switch ($value) {
+                case Jc::LEFT:
+                    $alignment = Jc::START;
+                    break;
+                case Jc::RIGHT:
+                    $alignment = Jc::END;
+                    break;
+                case Jc::JUSTIFY:
+                    $alignment = Jc::BOTH;
+                    break;
+                default:
+                    $alignment = $value;
+                    break;
+            }
+
+            $this->alignment = $alignment;
         }
 
         return $this;
diff --git a/src/PhpWord/Style/Paragraph.php b/src/PhpWord/Style/Paragraph.php
index 78a9c95f97..a98ca258cc 100644
--- a/src/PhpWord/Style/Paragraph.php
+++ b/src/PhpWord/Style/Paragraph.php
@@ -232,8 +232,25 @@ public function getAlignment()
      */
     public function setAlignment($value)
     {
-        if (in_array($value, Jc::getAllowedValues(), true)) {
-            $this->alignment = $value;
+        if (Jc::getValidator()->isValid($value)) {
+            $alignment = '';
+
+            switch ($value) {
+                case Jc::LEFT:
+                    $alignment = Jc::START;
+                    break;
+                case Jc::RIGHT:
+                    $alignment = Jc::END;
+                    break;
+                case Jc::JUSTIFY:
+                    $alignment = Jc::BOTH;
+                    break;
+                default:
+                    $alignment = $value;
+                    break;
+            }
+
+            $this->alignment = $alignment;
         }
 
         return $this;
diff --git a/src/PhpWord/Style/Table.php b/src/PhpWord/Style/Table.php
index ea4e493284..717a6bc168 100644
--- a/src/PhpWord/Style/Table.php
+++ b/src/PhpWord/Style/Table.php
@@ -509,8 +509,25 @@ public function getAlignment()
      */
     public function setAlignment($value)
     {
-        if (in_array($value, JcTable::getAllowedValues(), true)) {
-            $this->alignment = $value;
+        if (JcTable::getValidator()->isValid($value)) {
+            $alignment = '';
+
+            switch ($value) {
+                case JcTable::LEFT:
+                    $alignment = JcTable::START;
+                    break;
+                case JcTable::RIGHT:
+                    $alignment = JcTable::END;
+                    break;
+                case JcTable::JUSTIFY:
+                    $alignment = JcTable::CENTER;
+                    break;
+                default:
+                    $alignment = $value;
+                    break;
+            }
+
+            $this->alignment = $alignment;
         }
 
         return $this;
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 6a1398a4db..8ea94aede9 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -15,6 +15,8 @@
  * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
  */
 
+require_once __DIR__ . '/../bootstrap.php';
+
 date_default_timezone_set('UTC');
 
 // defining base dir for tests
@@ -22,18 +24,6 @@
     define('PHPWORD_TESTS_BASE_DIR', realpath(__DIR__));
 }
 
-$vendorDirPath = realpath(__DIR__ . '/../vendor');
-if (file_exists($vendorDirPath . '/autoload.php')) {
-    require $vendorDirPath . '/autoload.php';
-} else {
-    throw new Exception(
-        sprintf(
-            'Could not find file \'%s\'. It is generated by Composer. Use \'install\' or \'update\' Composer commands to move forward.',
-            $vendorDirPath . '/autoload.php'
-        )
-    );
-}
-
 spl_autoload_register(function ($class) {
     $class = ltrim($class, '\\');
     $prefix = 'PhpOffice\\PhpWord\\Tests';